OT Cyber Security Engineer

Work Schedule

Environmental Conditions

Job Description

Position Summary

The OT Cyber Security Engineer will play a critical role in strengthening Thermo Fisher Scientific’s manufacturing, lab, and R&D environments by implementing, integrating, and supporting secure and resilient OT cyber security solutions. Working closely with the OT Cyber Security Architect and network engineering teams, this role focuses on execution — ensuring that sites meet enterprise-defined security standards, architectures, and compliance requirements.

This is a highly technical, execution-focused role requiring strong expertise in OT/ICS environments, cyber security controls, and systems integration. The successful candidate will collaborate across IT, OT, and lab/R&D teams, demonstrate strong problem-solving skills, and contribute to continuous improvement of security posture across a complex global environment.

Key Responsibilities

• Implement and support OT cyber security controls across manufacturing, lab, and R&D environments in alignment with enterprise security architectures.
• Deploy and configure security technologies including firewalls, IDS/IPS, network segmentation controls, endpoint protection, and monitoring tools within OT environments.
• Integrate OT systems with enterprise security platforms such as SIEM, vulnerability management, and identity/access management solutions.
• Support secure system design and ensure adherence to security-by-design principles in OT deployments.
• Support monitoring of OT environments through SIEM and specialized OT security platforms (e.g., Claroty).
• Assist in threat detection, investigation, and response activities within OT environments.
• Collaborate with cyber defense and incident response teams to contain and remediate security incidents.
• Support development and tuning of detection use cases specific to OT, lab, and R&D systems.
• Assist in vulnerability identification, assessment, and remediation across OT assets.
• Support patch management processes, balancing security requirements with operational constraints.
• Implement system hardening and secure configuration baselines aligned with industry standards.
• Support troubleshooting of OT network and system issues with a security-focused mindset.
• Collaborate with OT network engineering and automation teams to ensure secure segmentation and connectivity between IT and OT environments.
• Assist in validating secure configurations of industrial protocols and communication paths.
• Ensure minimal disruption to operations while implementing or maintaining security controls.
• Participate in OT security assessments, audits, and site evaluations.
• Support alignment with industry standards such as ISA/IEC 62443, NIST, and internal security policies.
• Document findings, risks, and remediation plans with clear prioritization.
• Assist with regulatory and audit requirements related to OT cyber security.
• Partner with OT Cyber Security Architects, network engineers, site engineers, and IT teams to execute security initiatives.
• Build strong working relationships across global manufacturing, lab, and R&D organizations.
• Communicate technical concepts and risks effectively to both technical and non-technical stakeholders.
• Contribute to a collaborative and security-focused culture across teams.
• Stay current with emerging OT threats, vulnerabilities, and security technologies.
• Identify opportunities to improve security standards, processes, and tooling.
• Contribute to the evolution of OT cyber security capabilities and maturity.
• Support the adoption of innovative technologies, including automation and AI-driven security solutions.

Travel

Up to 30% travel to global manufacturing, lab, and R&D environments for implementation, assessments, and support.

Qualifications

Experience & Skills

• Experience in OT cyber security, ICS security, or network/security engineering within industrial environments.
• Strong knowledge of OT/ICS systems, industrial protocols (e.g., Ethernet/IP, Modbus, PROFINET), and manufacturing or lab systems.
• Familiarity with cyber security frameworks and standards (e.g., ISA/IEC 62443, NIST CSF).
• Experience with security technologies such as SIEM, IDS/IPS, endpoint protection, and vulnerability management tools.
• Strong troubleshooting and problem-solving skills in operational environments with a focus on minimizing downtime.
• Experience supporting system integration between OT and enterprise IT security platforms.
• Ability to work independently on assigned tasks and projects with limited supervision.
• Effective communication and collaboration skills in global, matrixed organizations.

Education & Certifications

• Bachelor’s degree in Cyber Security, Computer Science, Engineering, or related field preferred.
• Relevant certifications (e.g., GICSP, CISSP, Security+, CCNA/CCNP, or equivalent) desirable.
• Equivalent work experience may substitute for formal education.

Enhanced Technical Requirements

• Hands-on experience with OT security platforms (e.g., Claroty) and industrial network monitoring.
• Understanding of network segmentation strategies, firewalls, and secure remote access within OT environments.
• Experience with SIEM integration and log analysis for OT systems.
• Familiarity with asset inventory and visibility solutions for OT environments.
• Knowledge of secure architecture principles such as Zero Trust in industrial contexts.
• Strong documentation skills to support audits, compliance, and operational continuity.
• Exposure to Generative AI use cases in cyber security operations is a plus.

Soft Skill Expectations

• Execution: Deliver high-quality implementation and support activities with limited oversight.
• Collaboration: Work effectively across IT, OT, and lab/R&D teams to achieve security outcomes.
• Problem Solving: Diagnose and resolve complex technical issues in operational environments.
• Communication: Clearly articulate technical issues, risks, and recommendations to stakeholders.
• Accountability: Take ownership of assigned tasks and follow through to completion.
• Improvement Mindset: Contribute to continuous improvement of processes, tools, and security posture.

Benefits & Rewards

Thermo Fisher Scientific offers a comprehensive Total Rewards package, including competitive compensation, annual incentive opportunities, healthcare and retirement benefits, paid time off, employee stock purchase plan, and career development resources.